LOS ANGELES (Billboard) - For the second week in a row, Mario's "Let Me Love You" topped Billboard's Hot 100 singles chart, while Ciara's "1, 2 Step" moved up one to No. 2, trading places with Snoop Dogg's former chart-topper "Drop It Like It's Hot."

Averaging one slot per week, Lil Jon & the East Side Boyz' "Lovers and Friends" continued its ascent toward the top of the Hot 100. This week's 5-4 move pushed Destiny's Child's "Soldier" down one to No. 5, that track's first fall on the tally since its debut seven weeks ago.

Usher and Alicia Keys' "My Boo" was unchanged at No. 6 as was Nelly's "Over and Over" at No. 7. Ja Rule's "Wonderful" was No. 8 for a fourth week, and 50 Cent's "Disco Inferno" broke into the top 10 ranks with a two-rung jump to No. 9. Destiny's Child's "Lose My Breath" slipped one place to No. 10.

John Legend's "Ordinary People" led the Hot 100 debuts at No. 73 in the week ended Dec. 26. The neo soul singer's just released full-length, "Get Lifted" (Sony Urban Music/Columbia), is expected on The Billboard 200 next week.

Also new to the Hot 100 were Maroon5's "Sunday Morning" at No. 75, Snoop Dogg's "Let's Get Blown" at No. 76, Akon's "Ghetto" at No. 95 and the Alchemist's "Hold You Down" featuring Prodigy, Illa Ghee and Nina Sky at No. 99.

Green Day's "Boulevard of Broken Dreams" started a second week at No. 1 on Billboard's airplay-based Mainstream Rock Tracks, and a fifth weekatop the Modern Rock Tracks chart.